package com.ruoyi.common.utils;

import lombok.AccessLevel;
import lombok.NoArgsConstructor;
import org.apache.commons.lang3.time.DateFormatUtils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.*;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;

/**
 * 时间工具类
 *
 * @author ruoyi
 */
@NoArgsConstructor(access = AccessLevel.PRIVATE)
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {

    public static final String YYYY = "yyyy";

    public static final String YYYY_MM = "yyyy-MM";

    public static final String YYYY_MM_DD = "yyyy-MM-dd";

    public static final String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static final String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

    private static final String[] PARSE_PATTERNS = {
        "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
        "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
        "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate() {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate() {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static String getTime() {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static String dateTimeNow() {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static String dateTimeNow(final String format) {
        return parseDateToStr(format, new Date());
    }

    public static String dateTime(final Date date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static String parseDateToStr(final String format, final Date date) {
        return new SimpleDateFormat(format).format(date);
    }

    public static Date dateTime(final String format, final String ts) {
        try {
            return new SimpleDateFormat(format).parse(ts);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static String datePath() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static String dateTime() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), PARSE_PATTERNS);
        } catch (ParseException e) {
            return null;
        }
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算相差天数
     */
    public static int differentDaysByMillisecond(Date date1, Date date2) {
        return Math.abs((int) ((date2.getTime() - date1.getTime()) / (1000 * 3600 * 24)));
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate) {
        //30天1个月
        long nmm = 1000L * 24 * 60 * 60 * 30;
        long nd = 1000L * 24 * 60 * 60;
        long nh = 1000L * 60 * 60;
        long nm = 1000L * 60;
        long ns = 1000L;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        //计算相差多少月
        long month = diff / nmm;
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        long sec = diff % nd % nh % nm / ns;
        return month + "月" + day + "天" + hour + "小时" + min + "分钟";
    }

    /**
     * 计算两个时间差
     * nowDate  指定的时间
     */
    public static String getDatePoorSingle(Date nowDate) {
        //30天1个月
        long nmm = 1000L * 24 * 60 * 60 * 30;
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        long ns = 1000;
        // 获得两个时间的毫秒时间差异
        Date endDate = new Date();
        long diff = endDate.getTime() - nowDate.getTime();
        //计算相差多少月
        long month = diff / nmm;
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        long sec = diff % nd % nh % nm / ns;
        if (month > 0) {
            return month + "个月前";
        }
        if (day > 0) {
            return day + "天前";
        }
        if (hour > 0) {
            return hour + "小时前";
        }
        if (min > 0) {
            return min + "分钟前";
        }
        if (sec > 0) {
            return sec + "秒前";
        }
        return null;
    }

    /**
     * 增加 LocalDateTime ==> Date
     */
    public static Date toDate(LocalDateTime temporalAccessor) {
        ZonedDateTime zdt = temporalAccessor.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 增加 LocalDate ==> Date
     */
    public static Date toDate(LocalDate temporalAccessor) {
        LocalDateTime localDateTime = LocalDateTime.of(temporalAccessor, LocalTime.of(0, 0, 0));
        ZonedDateTime zdt = localDateTime.atZone(ZoneId.systemDefault());
        return Date.from(zdt.toInstant());
    }

    /**
     * 获取今天剩余秒数
     */
    public static long seconds() {
        LocalDateTime midnight = LocalDateTime.now().plusDays(1).withHour(0).withMinute(0).withSecond(0).withNano(0);
        return ChronoUnit.SECONDS.between(LocalDateTime.now(), midnight);
    }

    /**
     * 判断当前时间是否在指定时间 +24 小时之内
     * @param targetTime 目标时间（Date 类型）
     * @return true 表示当前时间在24小时区间内，否则 false
     */
    public static boolean isWithin24Hours(Date targetTime) {
        if (targetTime == null) {
            throw new IllegalArgumentException("目标时间不能为空");
        }
        Instant targetInstant = targetTime.toInstant();
        Instant nowInstant = Instant.now();
        Instant targetPlus24Hours = targetInstant.plus(Duration.ofHours(24));
        return !nowInstant.isBefore(targetInstant) && nowInstant.isBefore(targetPlus24Hours);
    }


    /**
     * 获取今天开始时间 和 今天结束时间
     */
    public static List<String> getStartTimeAndEndTime() {
        List<String> result = new ArrayList<>();

        // 获取当前系统时区
        ZoneId zone = ZoneId.systemDefault();
        LocalDate today = LocalDate.now();

        // 今天开始时间：00:00:00
        ZonedDateTime startOfDay = today.atStartOfDay(zone);
        // 今天结束时间：23:59:59.999
        ZonedDateTime endOfDay = today.plusDays(1).atStartOfDay(zone).minusNanos(1);

        // 格式化为字符串
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        result.add(startOfDay.format(formatter));
        result.add(endOfDay.format(formatter));

        return result;
    }

    public static void main(String[] args) {
        System.out.println(getStartTimeAndEndTime());
    }




}
